Retarder control system, retarder control device and vehicle

Abstract

This invention relates to the field of retarder control, and discloses a retarder control system, a retarder control device, and a vehicle. In the energized state, a two-position two-way solenoid valve is connected to a two-position three-way solenoid valve. The outlet of the two-position three-way solenoid valve is connected to the control chamber of a relay valve, thereby controlling the opening and closing of the relay valve. When the two-position three-way solenoid valve is energized, its outlet is connected; when de-energized, its outlet is disconnected. The opening and closing of the relay valve assembly controls the intake of compressed air into the outlet. The device also includes a controller, with a pressure sensor at the outlet connected to the controller. The controller controls the energization and de-energization of the two-position two-way solenoid valve and the two-position three-way solenoid valve based on the collected outlet pressure. This device has advantages such as rapid response, high safety, and good overall integrity.

Description

Technical Field

[0001] This invention relates to the field of automotive braking, and more particularly to a retarder control system, a retarder control device, and a vehicle. Background Technology

[0002] A vehicle retarder is an auxiliary braking system that improves the safe braking performance of large, heavy-duty trucks. Currently, the vast majority of manufactured vehicle retarders are imitations and modifications of mature foreign technologies; their basic structure, working principle, and core component configurations are very similar. However, currently manufactured vehicle retarders generally suffer from high failure rates and high damage rates; and over 90% of these problems occur in the retarder controller. Chinese Patent CN200810051204.2 discloses an automatic control device for a vehicle retarder, fundamentally eliminating the factors that cause excessive power consumption in electronic components, effectively solving the long-standing technical problem of high controller damage and failure rates plaguing the vehicle retarder industry.

[0003] However, the existing hydraulic retarder control devices still have drawbacks such as slow pressure build-up, difficulty in controlling the outlet air pressure, and insufficient safety redundancy. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a retarder control device and a vehicle.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The retarder control system includes an air inlet, an air outlet, an exhaust outlet, a two-position two-way solenoid valve, a two-position three-way solenoid valve, and a relay valve.

[0007] One air inlet is connected to the 2-position 2-way solenoid valve 1 via an air passage, and the other is connected to the air inlet of the relay valve; the 2-position 2-way solenoid valve 1 is connected to the 2-position 3-way solenoid valve, and the air passage between the 2-position 2-way solenoid valve 1 and the 2-position 3-way solenoid valve 1 is controlled by the on / off power of the 2-position 2-way solenoid valve 1. When energized, the 2-position 2-way solenoid valve 1 and the 2-position 3-way solenoid valve 1 are connected.

[0008] The outlet of the two-position three-way solenoid valve is connected to the control chamber of the relay valve to control the opening and closing of the relay valve. When the two-position three-way solenoid valve is energized, its outlet is in the connected state, and when the two-position three-way solenoid valve is de-energized, its outlet is in the disconnected state.

[0009] The relay valve assembly controls the flow of compressed air from the inlet to the outlet. It also includes a controller with a pressure sensor at the outlet. The pressure sensor is connected to the controller, which controls the on / off state of the two-position two-way solenoid valve and the two-position three-way solenoid valve based on the collected outlet pressure.

[0010] Preferably, a pressure protection valve is also included, which is connected to the air outlet. The air outlet of the pressure protection valve is connected to the exhaust port. When the pressure at the air outlet is greater than a preset range, the pressure protection valve will discharge the excess compressed air.

[0011] Preferably, it also includes a two-position two-way solenoid valve two, the air inlet of which is connected to the air outlet of a two-position three-way solenoid valve, and the air outlet of which is connected to an exhaust port.

[0012] A retarder control device, including any of the above-described retarder control systems, includes a valve body, an air inlet, an air outlet and an exhaust outlet disposed on the valve body, and an air passage and an air hole disposed within the valve body for connecting the air inlet, the air outlet, the exhaust outlet, a two-position two-way solenoid valve, a two-position three-way solenoid valve and a relay valve.

[0013] The air inlet of the two-position two-way solenoid valve is chamber A. The air inlet enters the valve body through channel one. Channel one is provided with hole one and hole two. The air inlet is connected to chamber A through hole one, and the air inlet is connected to chamber F of the relay valve for air intake through hole two.

[0014] The valve body is provided with a third hole and a second channel connected to the third hole. The other end of the second channel is a fourth hole. The fourth hole is connected to the air inlet B chamber of the two-position three-way solenoid valve, and the third hole is connected to the air outlet of the two-position two-way three-way valve. The two-position two-way solenoid valve controls the opening and closing of valve one by turning on and off, thereby controlling the connection and disconnection of chamber A and the third hole.

[0015] The outlet of the two-position three-way solenoid valve is chamber C. The valve body is also provided with channel three. One end of channel three is connected to chamber C through hole six, and the other end of channel three is connected to the control chamber E of the relay valve through hole seven. The on and off of the two-position three-way solenoid valve controls the connection or disconnection of chamber C and chamber B.

[0016] The compressed air in chamber E can control the opening and closing of relay valve one and exhaust valve port; when valve one is open and exhaust valve port two is closed, chamber F is connected to chamber G, which is connected to the air outlet; when valve one is closed and exhaust valve port two is open, chamber G is connected to the exhaust port; chamber G is equipped with a pressure sensor and also includes a controller, which is connected to the pressure sensor. The controller controls the on / off of two-position two-way solenoid valve one and two-position three-way solenoid valve according to the received pressure signal to control the pressurization, pressure holding and pressure reduction of the air outlet.

[0017] As a preferred embodiment, the two-position three-way solenoid valve includes valve port two and exhaust valve port one. The two-position three-way solenoid valve includes a valve core, an inlet end, an outlet end, and an exhaust end. In the de-energized state, the valve core abuts against the valve port two position to isolate chamber B and the outlet end, and the outlet end is connected to the exhaust end. In the energized state, the valve core moves to open the valve port two while sealing the exhaust valve port one.

[0018] Preferably, a pressure protection valve is also included. The pressure protection valve is installed on the valve body. The air inlet of the pressure protection valve is connected to the G chamber, and the air outlet of the pressure protection valve is connected to the exhaust port. When the pressure at the air inlet is greater than the preset pressure of the pressure protection valve, the valve port of the pressure protection valve opens to exhaust air.

[0019] Preferably, the valve body is also provided with channel four and channel six. Channel four is connected to the exhaust end of the two-position three-way solenoid valve through hole eight, and the other end of channel four is connected to the exhaust port. One end of channel six is ​​connected to the outlet end of the pressure protection valve, and the other end is connected to the exhaust end of the two-position three-way exhaust valve.

[0020] As a preferred embodiment, it also includes a two-position two-way solenoid valve two, the air inlet of the two-position two-way solenoid valve two is chamber D, chamber D is connected to chamber C through channel eight provided on the valve body, the hole connecting channel eight to chamber C is hole five, and the hole connecting to chamber D is hole twelve.

[0021] It also includes a channel 7 installed on the valve body. One end of the channel 7 is connected to the second outlet of the two-position two-way solenoid valve through hole 11, and the other end of the channel 7 is connected to the exhaust port.

[0022] Preferably, the valve body also includes a top cover and a housing, which are installed at both ends of the valve body. The controller is a PCB control panel, which is installed inside the housing. The PCB control panel is connected to a two-position two-way solenoid valve and a two-position three-way solenoid valve. The two-position three-way solenoid valve, the two-position two-way solenoid valve, and the relay valve are installed in the valve cavity opened on the valve body.

[0023] The vehicle is equipped with the aforementioned retarder control device.

[0024] Because the present invention adopts the above technical solution, it has the following significant technical effects:

[0025] Compared with existing technologies, this invention has the following significant advantages and positive effects: First, this solution eliminates the need for pipeline laying through integrated design, resulting in a higher degree of integration. Simultaneously, this solution features fast control response, capable of real-time adjustment of the outlet pressure as required, and incorporates protection and redundancy devices. The entire device is safer. Attached Figure Description

[0026] Figure 1 This is a functional diagram of Embodiment 1.

[0027] Figure 2 This is a schematic diagram of the device's channels and vents.

[0028] Figure 3 This is a schematic diagram of the structure of each solenoid valve and relay valve in the device.

[0029] Figure 4 This is a schematic diagram of the structure of the two-position two-way solenoid valve one and the two-position two-way solenoid valve two.

[0030] The technical names of the labels in the attached diagram are as follows: 1-Inlet, 2-Outlet, 3-Exhaust port, 4-Two-position two-way solenoid valve one, 5-Two-position three-way solenoid valve, 7-Relay valve, 8-Controller, 9-Pressure sensor, 10-Pressure protection valve, 11-Two-position two-way solenoid valve two, 12-Valve body, 13-Top cover, 14-Housing, 15-Cavity A, 16-Channel one, 17-Hole one, 18-Hole two, 19-Cavity F, 20-Hole three, 21-Channel two, 22-Hole four, 23-Cavity B, 24-Valve one, 25- C chamber, 26—Channel 3, 27—Hole 6, 28—Hole 7, 29—Channel E, 31—Exhaust valve port 2, 32—Channel G, 34—Valve port 2, 35—Exhaust valve port 1, 37—Channel 4, 38—Channel 6, 39—Hole 8, 40—Channel D, 41—Hole 5, 42—Hole 12, 43—Channel 7, 45—Channel H, 46—Valve port 4, 47—Valve port 2, 48—Channel I, 49—Valve port 3, 50—Piston, 52—Channel J, 53—Channel 8, 54—Hole 11, 55—Hole 10, 56—Channel 5. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] Example 1

[0033] The retarder control system includes an air inlet 1, an air outlet 2, an exhaust outlet 3, a two-position two-way solenoid valve 4, a two-position three-way solenoid valve 5, and a relay valve 7.

[0034] One air inlet 1 is connected to the two-position two-way solenoid valve 4 via an air passage, and the other is connected to the air inlet 1 of the relay valve 7; the two-position two-way solenoid valve 4 is connected to the two-position three-way solenoid valve 5, and the air passage between the two-position two-way solenoid valve 4 and the two-position three-way solenoid valve 5 is controlled by the on / off state of the two-position two-way solenoid valve 4. When energized, the two-position two-way solenoid valve 4 is connected to the two-position three-way solenoid valve 5.

[0035] The outlet of the two-position three-way solenoid valve 5 is connected to the control chamber of the relay valve 7, thereby controlling the opening and closing of the relay valve 7. When the two-position three-way solenoid valve 5 is energized, its outlet is in a connected state; when the two-position three-way solenoid valve 5 is de-energized, its outlet is in a disconnected state.

[0036] The opening and closing of the relay valve 7 valve assembly can control the compressed air from the inlet 1 to the outlet 2; it also includes a controller 8, and a pressure sensor 9 is provided at the outlet 2 end. The pressure sensor 9 is connected to the controller 8, and the controller 8 controls the on / off of the two-position two-way solenoid valve 4 and the two-position three-way solenoid valve 5 according to the pressure collected at the outlet 2.

[0037] In order to maintain the pressure of the outlet 2 within a set range, a pressure protection valve 10 is also included. The pressure protection valve 10 is connected to the outlet 2, and the outlet end of the pressure protection valve 10 is connected to the exhaust port 3. When the pressure of the outlet 2 is greater than the preset range, the pressure protection valve 10 discharges the excess compressed air to reduce the pressure of the outlet 2. When the pressure falls within the set range, the valve of the pressure protection valve 10 closes to prevent the leakage of compressed air from the outlet 2.

[0038] To ensure that the pressure regulation function at the outlet 2 can still be achieved even if the two-position three-way solenoid valve 5 fails, this solution also includes a two-position two-way solenoid valve 11. The inlet of the two-position two-way solenoid valve 11 is connected to the outlet of the two-position three-way solenoid valve 5, and the outlet of the two-position two-way solenoid valve 11 is connected to the exhaust port 3. When the two-position three-way solenoid valve 5 fails, the controller 8 energizes the two-position two-way solenoid valve, and the compressed air in the control chamber of the relay valve 7 can be discharged from the exhaust port 3.

[0039] Example 2

[0040] The retarder control device, including the retarder control system described in Embodiment 1, includes a valve body 12, an air inlet 1, an air outlet 2 and an exhaust outlet 3 disposed on the valve body 12, and an air passage and an air hole are provided inside the valve body 12 for connecting the air inlet 1, the air outlet 2, the exhaust outlet 3, a two-position two-way solenoid valve 4, a two-position three-way solenoid valve 5 and a relay valve 7.

[0041] The air inlet of the two-position two-way solenoid valve 4 is chamber A 15. The air inlet 1 enters the valve body 12 through channel 16. Channel 16 is provided with hole 17 and hole 2 18. The air inlet 1 is connected to chamber A 15 through hole 17 and to chamber F 19 of relay valve 7 for air intake through hole 2 18.

[0042] The valve body 12 is provided with a third hole 20 and a second channel 21 connected to the third hole 20. The other end of the second channel 21 is a fourth hole 22. The fourth hole 22 is connected to the air inlet B chamber 23 of the two-position three-way solenoid valve 5. The third hole 20 is connected to the air outlet of the two-position two-way three-way valve. The two-position two-way solenoid valve 4 controls the opening and closing of the valve 24 by switching the power on and off, thereby controlling the connection and disconnection of chamber A 15 and the third hole 20.

[0043] The outlet of the two-position three-way solenoid valve 5 is chamber C 25. The valve body 12 is also provided with a channel 3 26. One end of channel 3 26 is connected to chamber C 25 through hole 6 27, and the other end of channel 3 26 is connected to the control chamber E 29 of the relay valve 7 through hole 7 28. The on and off of the two-position three-way solenoid valve 5 controls the connection or disconnection of chamber C 25 and chamber B 23.

[0044] The compressed air in chamber E 29 can control the opening and closing of relay valve 7, valve 24, and exhaust valve port; when valve 24 is open and exhaust valve port 31 is closed, chamber F 19 and chamber G 32, which is connected to the exhaust port 2, are connected; when valve 24 is closed and exhaust valve port 31 is open, chamber G 32 and exhaust port 3 are connected; chamber G 32 is equipped with pressure sensor 9 and also includes controller 8, which is connected to pressure sensor 9. Controller 8 controls the on / off of two-position two-way solenoid valve 4 and two-position three-way solenoid valve 5 according to the received pressure signal to control the pressurization, pressure holding, and pressure reduction of exhaust port 2.

[0045] In this embodiment, the two-position three-way solenoid valve 5 includes a second valve port 34 and an exhaust valve port 35. The two-position three-way solenoid valve 5 includes a valve core, an inlet end, an outlet end, and an exhaust end. In the de-energized state, the valve core abuts against the second valve port 34, separating the B chamber 23 and the outlet end, and the outlet end is connected to the exhaust end. In the energized state, the valve core moves to open the second valve port 34 while sealing the exhaust valve port 35. The system also includes a pressure protection valve 10, which is mounted on the valve body 12. The inlet end of the pressure protection valve 10 is connected to the G chamber 32, and the outlet end of the pressure protection valve 10 is connected to the exhaust port 3. When the pressure at the inlet end is greater than the preset pressure of the pressure protection valve 10, the valve port of the pressure protection valve 10 opens to exhaust air.

[0046] The valve body 12 also includes channels 4 (37) and 6 (38). Channel 4 (37) is connected to the exhaust end of the 2-position 3-way solenoid valve 5 via hole 8 (39), and the other end of channel 4 (37) is connected to the exhaust port 3. One end of channel 6 (38) is connected to the outlet end of the pressure protection valve 10, and the other end is connected to the exhaust end of the 2-position 3-way exhaust valve. It also includes a 2-position 2-way solenoid valve 2 (11), whose inlet end is chamber D (40). Chamber D (40) is connected to chamber C (25) via channel 8 (53) on the valve body 12. The hole connecting channel 8 (53) to chamber C (25) is hole 5 (41), and the hole connecting channel 8 (53) to chamber D (40) is hole 12 (42). It also includes a channel 7 (43) on the valve body 12. One end of channel 7 (43) is connected to the outlet end of the 2-position 2-way solenoid valve 2 (11) via hole 11, and the other end of channel 7 (43) is connected to the exhaust port 3.

[0047] The device also includes an upper cover 13 and a housing 14, which are installed at both ends of the valve body 12. The controller 8 is a PCB control panel, which is installed inside the housing 14. The PCB control panel is connected to a two-position two-way solenoid valve 4 and a two-position three-way solenoid valve 5. The two-position three-way solenoid valve 5, the two-position two-way solenoid valve 4, and the relay valve 7 are installed in the valve cavity opened on the valve body 12.

[0048] Working principle:

[0049] Compressed air enters from inlet 1, passes through channel 16, enters chamber A 15 through hole 17, enters relay valve 7 inlet 1 through hole 2 18, and reaches chamber F 19.

[0050] Intake response characteristics: When the ECU receives a throttle pedal or engine torque signal, it communicates with the two-position two-way solenoid valve 4 and the two-position three-way solenoid valve 5. After the two-position two-way solenoid valve 4 is energized, it opens valve port 1. Compressed air in chamber A 15 enters channel 21 through port 3 20, and then enters chamber B 23 through port 4 22. After the two-position three-way solenoid valve 5 is energized, it opens valve port 2 34. Compressed air enters chamber C 25, and then splits into two paths. One path enters chamber D 40 through port 5 41, channel 8 53, and port 12 42. The other path enters through port 6 27, then through channel 3 26, and enters chamber E 29 of relay valve 7 through port 7 28. This pushes piston 50 upward, making contact with valve 24 and pushing valve 24 upward, opening valve port 3 49. When exhaust valve port 2 (31) is closed, compressed air in chamber F (19) enters chamber G (32) and then exits from exhaust port 2. A pressure sensor (9) at the electronic control unit monitors the pressure at exhaust port 2 in real time and sends feedback to the ECU. The ECU then controls the on / off state of the two-position three-way solenoid valve (5) to control the pressure in chamber E (29) controlled by relay valve 7, thus stabilizing the pressure at exhaust port 2 within the design range. When the pressure is below the design range, the ECU energizes the two-position three-way solenoid valve (5) to increase the pressure. When the pressure is above the design range, the ECU de-energizes the two-position three-way solenoid valve (5), closing port 2 (34) and opening exhaust valve port 1 (35). Compressed air enters chamber H (45), then through orifice 8 (39) into channel 4 (37), and finally exits from exhaust port 3. Once the pressure stabilizes, the ECU de-energizes the two-position two-way solenoid valve (4), closing port 1 to cut off the air supply pressure and maintain pressure.

[0051] Meanwhile, this valve is equipped with a pressure protection valve 10. Compressed air in chamber G 32 enters channel 56 through hole 9, and then enters chamber I 48 through hole 10 55. When the pressure at outlet 2 is higher than the design range, the compressed air pushes valve 2 47 to the right, opening valve port 46. The compressed air enters chamber J 52, passes through channel 6 38, enters chamber H 45, and is discharged through exhaust port 3. When the pressure in chamber G 32 reaches the design range, valve 2 47 moves to the left under the action of spring force, thereby closing valve port 46. The above operation achieves the pressure protection function.

[0052] Exhaust response characteristics: The ECU communicates with the two-position two-way solenoid valve 4 and the two-position three-way solenoid valve 5. The two-position two-way solenoid valve 4 is de-energized, thereby cutting off the air supply pressure. The two-position three-way solenoid valve 5 is de-energized, closing valve 24 and opening exhaust valve port 35. The compressed air in chamber E 29 passes through chamber C 25 and chamber H 45 and is discharged from exhaust port 3. The piston 50 moves down under the action of the compressed air, thereby closing valve 24 and opening exhaust valve port 31. The compressed air in chamber G 32 is discharged from exhaust port 3.

[0053] Additionally, this valve is equipped with a two-position two-way solenoid valve 211. When the two-position three-way solenoid valve 5 fails, the two-position two-way solenoid valve 211 can provide protection. When the pressure at outlet 2 is too high, the ECU communicates with the two-position two-way solenoid valve 211. After the two-position two-way solenoid valve 211 is energized, it opens valve 1245, then enters channel 743 through hole 1154, and is discharged from outlet 3, thus regulating the pressure at outlet 2.

[0054] Example 3

[0055] The vehicle is equipped with the aforementioned retarder control device.

Claims

1. A retarder control device, characterized in that: The retarder control system is characterized by including an air inlet (1), an air outlet (2), an exhaust outlet (3), a two-position two-way solenoid valve (4), a two-position three-way solenoid valve (5), and a relay valve (7). One air inlet (1) is connected to the two-position two-way solenoid valve (4) via an air path, and the other is connected to the air inlet (1) of the relay valve (7); the two-position two-way solenoid valve (4) is connected to the two-position three-way solenoid valve (5), and the air path between the two-position two-way solenoid valve (4) and the two-position three-way solenoid valve (5) is controlled by the power on and off of the two-position two-way solenoid valve (4). When the power is on, the two-position two-way solenoid valve (4) is connected to the two-position three-way solenoid valve (5); The outlet of the two-position three-way solenoid valve (5) is connected to the control chamber of the relay valve (7) to control the opening and closing of the relay valve (7); when the two-position three-way solenoid valve (5) is energized, its outlet is connected; when the two-position three-way solenoid valve (5) is de-energized, its outlet is disconnected. The relay valve (7) controls the opening and closing of the valve assembly, allowing compressed air from the inlet (1) to enter the outlet (2); it also includes a controller (8), with a pressure sensor (9) installed at the outlet (2), the pressure sensor (9) being connected to the controller (8), and the controller (8) controlling the on / off state of the two-position two-way solenoid valve (4) and the two-position three-way solenoid valve (5) based on the collected pressure at the outlet (2); It also includes a pressure protection valve (10) and a two-position two-way solenoid valve (11). It also includes a valve body (12), an air inlet (1), an air outlet (2) and an exhaust outlet (3) are provided on the valve body (12), and the valve body (12) is provided with an air passage and an air hole for connecting the air inlet (1), the air outlet (2), the exhaust outlet (3), the two-position two-way solenoid valve (4), the two-position three-way solenoid valve (5) and the relay valve (7); The air inlet of the two-position two-way solenoid valve (4) is chamber A (15). The air inlet (1) enters the valve body (12) through channel one (16). Channel one (16) is provided with hole one (17) and hole two (18). The air inlet (1) is connected to chamber A (15) through hole one (17), and the air inlet (1) is connected to chamber F (19) of the relay valve (7) for air intake through hole two (18). The valve body (12) is provided with a third hole (20) and a second channel (21) connected to the third hole (20). The other end of the second channel (21) is a fourth hole (22). The fourth hole (22) is connected to the air inlet B chamber (23) of the two-position three-way solenoid valve (5), and the third hole (20) is connected to the air outlet of the two-position two-way solenoid valve. The two-position two-way solenoid valve (4) controls the opening and closing of the first valve (24) by turning on and off the power, thereby controlling the connection and disconnection of the A chamber (15) and the third hole (20). The outlet of the two-position three-way solenoid valve (5) is chamber C (25). The valve body (12) is also provided with channel three (26). One end of channel three (26) is connected to chamber C (25) through hole six (27), and the other end of channel three (26) is connected to control chamber E (29) of relay valve (7) through hole seven (28). The on and off of the two-position three-way solenoid valve (5) controls the connection or disconnection of chamber C (25) and chamber B (23). The compressed air control relay valve (7), valve one (24), and exhaust valve port of chamber E (29) are open and closed; when valve one (24) is open and exhaust valve port two (31) is closed, chamber F (19) and chamber G (32) connected to the exhaust port (2) are connected; when valve one (24) is closed and exhaust valve port two (31) is open, chamber G (32) and exhaust port (3) are connected; a pressure sensor (9) is installed in chamber G (32), and the controller (8) controls the on / off of two-position two-way solenoid valve one (4) and two-position three-way solenoid valve (5) according to the received pressure signal to control the pressurization, pressure holding and pressure reduction of the exhaust port (2).

2. The retarder control device according to claim 1, characterized in that: The two-position three-way solenoid valve (5) includes valve port two (34) and exhaust valve port one (35). The two-position three-way solenoid valve (5) includes a valve core, an inlet end, an outlet end and an exhaust end. When the power is off, the valve core abuts against the valve port two (34) to separate the B chamber (23) and the outlet end. The outlet end is connected to the exhaust end. When the power is on, the valve core moves to open the valve port two (34) and seals the exhaust valve port one (35).

3. The retarder control device according to claim 2, characterized in that: The pressure protection valve (10) is installed on the valve body (12). The air inlet of the pressure protection valve (10) is connected to the G chamber (32), and the air outlet of the pressure protection valve (10) is connected to the exhaust port (3). When the pressure at the air inlet is greater than the preset pressure of the pressure protection valve (10), the valve port of the pressure protection valve (10) opens to exhaust gas.

4. The retarder control device according to claim 2, characterized in that: The valve body (12) is also provided with channel four (37) and channel six (38). Channel four (37) is connected to the exhaust end of the two-position three-way solenoid valve (5) through hole eight (39). The other end of channel four (37) is connected to the exhaust port (3). One end of channel six (38) is connected to the outlet end of the pressure protection valve (10), and the other end is connected to the exhaust end of the two-position three-way exhaust valve.

5. The retarder control device according to claim 2, characterized in that: The air inlet of the two-position two-way solenoid valve (11) is chamber D (40). Chamber D (40) is connected to chamber C (25) through channel eight (53) set on valve body (12). The hole connecting channel eight (53) to chamber C (25) is hole five (41), and the hole connecting to chamber D (40) is hole twelve (42). It also includes a channel seven (43) set on the valve body (12), one end of the channel seven (43) is connected to the outlet end of the two-position two-way solenoid valve two (11) through the hole (11), and the other end of the channel seven (43) is connected to the exhaust port (3).

6. The retarder control device according to claim 1, characterized in that: It also includes an upper cover (13) and a housing (14), which are installed at both ends of the valve body (12). The controller (8) is a PCB control panel, which is installed inside the housing (14). The PCB control panel is connected to a two-position two-way solenoid valve (4) and a two-position three-way solenoid valve (5). The two-position three-way solenoid valve (5), the two-position two-way solenoid valve (4), and the relay valve (7) are installed in the valve cavity opened on the valve body (12).

7. A vehicle, characterized in that: It is equipped with the retarder control device according to any one of claims 1 to 6.

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